#!/bin/sh /etc/rc.common

START=97
STOP=10

NAME=unblockmusic

uci_get_by_type() {
	local ret=$(uci get $NAME.@$1[0].$2 2>/dev/null)
	echo ${ret:=$3}
}

uci_get_by_name() {
	local index=0
	if [ -n $4 ]; then
	
		index=$4
	fi
	local ret=$(uci get $NAME.@$1[$index].$2 2>/dev/null)
	echo ${ret:=$3}
}

check_host() {
  local host=$1
  if echo $host | grep -E "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" >/dev/null; then
		hostip=$host
	elif [ "$host" != "${host#*:[0-9a-fA-F]}" ]; then
		hostip=$host
	else
		hostip=$(ping $host -W 1 -s 1 -c 1 | grep PING | cut -d'(' -f 2 | cut -d')' -f1)
		if echo $hostip | grep -E "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" >/dev/null; then
			hostip=$hostip
		else
			hostip="127.0.0.1"
		fi
	fi
	echo -e $hostip
}

ip_rule()
{
  local icount=$(uci show unblockmusic | grep 'filter_mode' | wc -l)
  let icount=icount-1
	for i in $(seq 0 $icount)
	do
		local ip=$(uci_get_by_name acl_rule ipaddr '' $i)
		local mode=$(uci_get_by_name acl_rule filter_mode '' $i)

		case "$mode" in
		http)
			ipset -! add music_http $ip
			;;
		https)
			ipset -! add music_https $ip
			;;
		disable)
			ipset -! add music_http $ip
			ipset -! add music_https $ip
			;;
		esac
	done
}

ENABLE=$(uci_get_by_type unblockmusic enabled 0)
TYPE=$(uci_get_by_type unblockmusic musicapptype default)
AUTOUPDATE=$(uci_get_by_type unblockmusic autoupdate 0)
APPTYPE=$(uci_get_by_type unblockmusic apptype go)
SEARCHLIMIT=$(uci_get_by_type unblockmusic search_limit 0)
FLAC=$(uci_get_by_type unblockmusic flac_enabled 0)
FORCE=$(uci_get_by_type unblockmusic force_enabled 0)

CLOUD=$(uci_get_by_type unblockmusic cloudserver "127.0.0.1:5200:5201")
cloudadd=$(echo "$CLOUD" | awk -F ':' '{print $1}')
cloudhttp=$(echo "$CLOUD" | awk -F ':' '{print $2}')
cloudhttps=$(echo "$CLOUD" | awk -F ':' '{print $3}')

cloudip=$(check_host $cloudadd)

CRON_FILE=/etc/crontabs/root

ipt_n="iptables -t nat"

add_rule()
{
  ipset -! -N music hash:ip
  ipset -! -N music_http hash:ip
  ipset -! -N music_https hash:ip
	$ipt_n -N CLOUD_MUSIC
	$ipt_n -A CLOUD_MUSIC -d 0.0.0.0/8 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 10.0.0.0/8 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 127.0.0.0/8 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 169.254.0.0/16 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 172.16.0.0/12 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 192.168.0.0/16 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 224.0.0.0/4 -j RETURN
	$ipt_n -A CLOUD_MUSIC -d 240.0.0.0/4 -j RETURN
	if [ "$APPTYPE" != "cloud" ]; then
    $ipt_n -A CLOUD_MUSIC -p tcp -m set ! --match-set music_http src --dport 80 -j REDIRECT --to-ports 5200
    $ipt_n -A CLOUD_MUSIC -p tcp -m set ! --match-set music_https src --dport 443 -j REDIRECT --to-ports 5201
  else
    $ipt_n -A CLOUD_MUSIC -p tcp -m set ! --match-set music_http src --dport 80 -j DNAT --to $cloudip:$cloudhttp
    $ipt_n -A CLOUD_MUSIC -p tcp -m set ! --match-set music_https src --dport 443 -j DNAT --to $cloudip:$cloudhttps
	fi
	$ipt_n -I PREROUTING -p tcp -m set --match-set music dst -j CLOUD_MUSIC
	iptables -I OUTPUT -d 223.252.199.10 -j DROP
	
	ip_rule
}

del_rule(){
	$ipt_n -D PREROUTING -p tcp -m set --match-set music dst -j CLOUD_MUSIC 2>/dev/null
	$ipt_n -F CLOUD_MUSIC  2>/dev/null
	$ipt_n -X CLOUD_MUSIC  2>/dev/null
	iptables -D OUTPUT -d 223.252.199.10 -j DROP 2>/dev/null
	
	ipset flush music 2>/dev/null
	ipset -X music_http 2>/dev/null
	ipset -X music_https 2>/dev/null
	
	rm -f /tmp/dnsmasq.d/dnsmasq-163.conf
	/etc/init.d/dnsmasq reload >/dev/null 2>&1
}

set_firewall(){
	rm -f /tmp/dnsmasq.d/dnsmasq-163.conf
	mkdir -p /tmp/dnsmasq.d
  	cat <<-EOF > "/tmp/dnsmasq.d/dnsmasq-163.conf"
ipset=/.music.163.com/music
ipset=/interface.music.163.com/music
ipset=/interface3.music.163.com/music
ipset=/apm.music.163.com/music
ipset=/apm3.music.163.com/music
ipset=/clientlog.music.163.com/music
ipset=/clientlog3.music.163.com/music
	EOF
	/etc/init.d/dnsmasq reload >/dev/null 2>&1
	
	add_rule
	
	mkdir -p /var/etc
	echo -e "/etc/init.d/unblockmusic restart" > "/var/etc/unblockmusic.include"
}

add_cron()
{
	if [ $AUTOUPDATE -eq 1 ]; then
		sed -i '/update_core.sh/d' $CRON_FILE
		echo '0 2 * * * /usr/share/UnblockNeteaseMusic/update_core.sh 2>&1' >> $CRON_FILE
		crontab $CRON_FILE
	fi
}

del_cron()
{
	sed -i '/update_core.sh/d' $CRON_FILE
	/etc/init.d/cron restart
}

start()
{
	stop
	
	[ $ENABLE -eq "0" ] && exit 0
		
	rm -f /tmp/unblockmusic.log
	echo "$(date -R) # Start UnblockNeteaseMusic" >/tmp/unblockmusic.log
	
	if [ "$TYPE" = "default" ]; then
		musictype=" "
	else
		musictype="-o $TYPE"
	fi
	
  if [ "$APPTYPE" == "nodejs" ]; then
    if [ $FLAC -eq 1 ]; then
      export ENABLE_FLAC=true
    fi
    if [ $FORCE -eq 1 ]; then
      sed -i '/item.code != 200/ { s/item.code != 200 || item.freeTrialInfo/item.br < 320000/g; }'  /usr/share/UnblockNeteaseMusic/src/hook.js
    else
      sed -i '/item.br < 320000/ { s/item.br < 320000/item.code != 200 || item.freeTrialInfo/g; }'  /usr/share/UnblockNeteaseMusic/src/hook.js
    fi
    node /usr/share/UnblockNeteaseMusic/app.js -p 5200 $musictype >>/tmp/unblockmusic.log 2>&1 &
    node /usr/share/UnblockNeteaseMusic/app.js -e https://music.163.com -p 5203:5201 $musictype >>/tmp/unblockmusic.log 2>&1 &
    add_cron
    echo "$(date -R) # UnblockNeteaseMusic Nodejs Version (http:5200, https:5201)" >>/tmp/unblockmusic.log  
	elif [ "$APPTYPE" == "go" ]; then
    if [ $FLAC -eq 1 ]; then
      ENABLE_FLAC="-b "
    fi
    UnblockNeteaseMusic $ENABLE_FLAC -p 5200 -sp 5201 -m 0 -c /usr/share/UnblockNeteaseMusicGo/server.crt -k /usr/share/UnblockNeteaseMusicGo/server.key -m 0 -e -sl ${SEARCHLIMIT} -l /tmp/unblockmusic.log &
    echo "$(date -R) # UnblockNeteaseMusic Golang Version (http:5200, https:5201)" >>/tmp/unblockmusic.log
  else
    kill -9 $(busybox ps -w | grep 'sleep 60m' | grep -v grep | awk '{print $1}') >/dev/null 2>&1
    /usr/bin/UnblockNeteaseMusicCloud >/dev/null 2>&1 &
     echo "$(date -R) # UnblockNeteaseMusic Cloud Version - Server: $cloudip (http:$cloudhttp, https:$cloudhttps)" >>/tmp/unblockmusic.log
	fi
		
	set_firewall
	
  if [ "$APPTYPE" != "cloud" ]; then
    /usr/share/UnblockNeteaseMusic/logcheck.sh >/dev/null 2>&1 &
  fi
}

stop()
{	
	kill -9 $(busybox ps -w | grep UnblockNeteaseMusic | grep -v grep | awk '{print $1}') >/dev/null 2>&1
	kill -9 $(busybox ps -w | grep logcheck.sh | grep -v grep | awk '{print $1}') >/dev/null 2>&1
	rm -f /tmp/unblockmusic.log
	
	del_rule
	del_cron
}
